Product Specifi Cations - Radio Shack 32-2055 User Manual

Beyond the Basics
product specifi cations
Input Impedance ................................................................. 20k Ohms
Continuous Output Power
Stereo at 1 kHz ....................................... 125 Watts x 2 (8 Ohms)
Stereo at 1 kHz ....................................... 175 Watts x 2 (4 Ohms)
Bridged at 20 Hz to 20 kHz .......................... 250 Watts (8 Ohms)
Bridged at 1 kHz ........................................... 350 Watts (8 Ohms)
Total Harmonic Distortion
(@ 70 Watts, 8 Ohms, 1 kHz, with Band Pass Filter)
MIC (Phone Jack) ............................................................... 0.20%
MIC (XLR Jack) ................................................................... 0.20%
CD/AUX .............................................................................. 0.15%
PHONO ............................................................................... 0.20%
Input Sensitivity (at 0.5% THD, 1 kHz)
MIC (Phone Jack) ............................................................ 1.35 mV
MIC (XLR Jack) ................................................................ 1.35 mV
CD/AUX ............................................................................ 500 mV
PHONO ................................................................................. 3 mV
Signal to Noise Ratio (Input Shorted) with WTD
MIC (Phone Jack) ................................................................ 65 dB
MIC (XLR Jack) .................................................................... 65 dB
CD/AUX ............................................................................... 75 dB
PHONO ................................................................................ 70 dB
Frequency Response (at 1 Watt, ± 3dB)
MIC (Phone Jack) .................................................40 Hz ~ 20 kHz
MIC (XLR Jack) .....................................................40 Hz ~ 20 kHz
CD/AUX ................................................................20 Hz ~ 30 kHz
PHONO (RIAA 100 Hz/10 kHz) ..........................+13dB ~ – 14dB
Notch Filter Effect
Range ....................................................................300 Hz ~ 3kHz
Depth .................................................................................. –12dB
Noise Level (Input Short) ....................................................... 0.75mV
Speaker Impedance ............................................. A,B (4 ~16 Ohms)
Power Requirement ..................................................... 120V AC 60Hz
Power Fuse ...............................................................7 Amps/250 volt
Dimensions ................................................5 3/8 x 19 x 14 1/2 inches
Weight ....................................................................... 27 lbs (12.3kgs)
NOTE: Specifi cations are typical; individual units might vary. Specifi cations
are subject to change and improvement without notice.
NOTE: Actual product may vary from the product images in this document.
A+B (8 ~16 Ohms)
Bridge(8 ~16 Ohms)
(136 x 482 x 367 mm)
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FAQs
We do not expect you to have any problem with your
amplifi er. But if you do, these suggestions might help.
Why isn't my amplifi er powering up, even though I have
tried turning it on and off?
• The fuse might be blown. Check the amplifi er's fuse
and replace it if necessary.
• The speakers might not be connected properly. Check
all connections.
Why can't I hear anything?
• The amplifi er's LEFT/RIGHT VOLUME, MIC1, MIC2,
MIC3, MIC4/PHONO, or CD/AUX controls might be
set to minimum. Adjust the volume control to the
desired setting.
• The speakers might not be connected properly. Check
all connections.
• A microphone or cable might be faulty. Check all
microphones and cables.
• The speakers might be the wrong impedance for
the PA. Make sure your speaker wires are 18-gauge
(for wire length up to 7.6m). For best results, use the
shortest length of speaker wire possible.
• The amplifi er might have shut down. Turn the
amplifi er off and let it cool down. Make sure the
amplifi er is properly vented, then turn it back on.
Why am I hearing feedback?
• The FEEDBACK FILTER might need to be adjusted.
Turn the FEEDBACK FILTER clockwise until you
reduce or eliminate feedback.
• Your microphones or speakers could be too close
together. Reposition the microphones and speakers.
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Beyond the Basics